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Hi,
Yes, you can definitely share one printer to multiple computers. All you need to have is a ethernet hub or some call it network hub and Cat5 cable. Ethernet Hub is a simple, small and inexpensive gadget to connect multiple computers together.For the Cat5 cable is popularly known as LAN cable. For you to share your printer, connect it on a ethernet hub as well as your computers using a Cat5 cable. Once everything is connected to the Ethernet hub fix the network and that's it. Everyone that is on the network can use the printer.
I hope I answered your question.
Thanks a lot!

The simplest kind and easy to maintain of home network contains exactly two computers. You can use this kind of network to share files, a printer or another peripheral device, and even an Internet connection. To connect two computers for sharing these and other network resources, consider the options described below.
Connecting Two Computers Directly With Cable

The traditional method to network two computers involves making a dedicated link by plugging one cable into the two systems. Several alternatives exist for networking two computers in this manner: Ethernet crossover cable
Null modem serial cable or parallel peripheral cable
Special-purpose USB cables
Ethernet crossover cable
Null modem serial cable or parallel peripheral cable
Special-purpose USB cables
Ethernet - Of the above choices, the Ethernet method is preferred as it supports a reliable, high-speed connection with minimal configuration required. Additionally, Ethernet technology offers the most general-purpose solution, allowing networks with more than two computers to be built fairly easily later. If one of your computers possesses an Ethernet adapter but the other has USB, an Ethernet crossover cable can still be used by first plugging a USB-to-Ethernet converter unit into the computer's USB port.

Ethernet crossover cables

Serial and parallel - This type of cabling, called Direct Cable Connection (DCC) when using Microsoft Windows, offers lower performance but offers the same basic functionality as Ethernet cables. You may prefer this option if you have such cables readily available and network speed is not a concern. Serial and parallel cables are never used to network more than two computers.

USB - Ordinary USB cables must not be used to connect two computers directly to each other. Attempting to do so can electrically damage the computers! However, special USB cables designed for direct connection exist that can be used safely. You may prefer this option over others if your computers lack functional Ethernet network adapters.

To make dedicated connections with Ethernet, USB, serial or parallel cables requires
each computer have a functioning network interface with an external jack for the cable, and
the network settings on each computer appropriately configured
One phone line or power cord cannot be used to directly connect two computers to each other for networking.

Connecting Two Computers with Cable through Central Infrastructure
Rather than cable two computers directly, the computers may instead be joined indirectly through a central network fixture. This method requires two network cables, one connecting each computer to the fixture. Several types of fixtures exist for home networking: Ethernet hubs, switches, and routers
USB hubs
Phoneline and powerline wall outlets
Ethernet hubs, switches, and routers
USB hubs
Phoneline and powerline wall outlets

Implementing this method often entails additional up-front cost to purchase more cables and network infrastructure. However, it's a general-purpose solution accommodating any reasonable number of devices (e.g, ten or more). You will likely prefer this approach if you intend to expand your network in the future.

Most cabled networks utilize Ethernet technology. Alternatively, USB hubs can be employed, while powerline and phoneline home networks each offer their own unique form of central infrastructure. The traditional Ethernet solutions are generally very reliable and offer high performance.
Connecting Two Computers Wirelessly
In recent years, wireless solutions have enjoyed increasing popularity for home networking. As with cabled solutions, several different wireless technologies exist to support basic two computer networks: Wi-Fi
Bluetooth
infrared
Wi-Fi
Bluetooth
infrared
Wi-Fi connections can reach a greater distance than the wireless alternatives listed above. Many newer computers, especially laptops, now contain built-in Wi-Fi capability, making it the preferred choice in most situations. Wi-Fi can be used either with or without a network fixture. With two computers, Wi-Fi networking minus a fixture (also called ad-hoc mode) is especially simple to set up. How To - Set Up an Ad Hoc WiFi Network

How To - Set Up an Ad Hoc WiFi Network

Bluetooth technology supports reasonably high-speed wireless connections between two computers without the need for a network fixture. Bluetooth is more commonly used when networking a computer with a consumer handheld device like a cell phone. Most desktop and older computers do not possess Bluetooth capability. Bluetooth works best if both devices are in the same room in close proximity to each other. Consider Bluetooth if you have interest in networking with hand held devices and your computers lack Wi-Fi capability.

Infrared networking existed on laptops years before either Wi-Fi or Bluetooth technologies became popular. Infrared connections only work between two computers, do not require a fixture, and are reasonably fast. Being very simple to set up and use, consider infrared if your computers support it and you lack the desire to invest effort in Wi-Fi or Bluetooth.

If you find mention of an alternative wireless technology called Home RF, you can safely ignore it. Home RF technology became obsolete several years ago and is not a practical option for home networking.

The best way to check if the computer can access to Internet is to boot
the computer to "Safemode with Netwroking", to do so, restart the
computer and as soon as it restarts keep on tapping F8 key, now select
"Safemode with Networking" from the Advance boot menu. Try to connect to
internet. If you are able to connect to Internet then the issue is with
the firewall on you computer, contact the firewall manufacture or
do settings. If you are still unable to connect to Internet, then the
internet setting are not correct, you may need to contact the ISP or try reseeting the Internet Explorer.

1 Find the WAN or uplink port of the Ethernet hub. Typically, it is located on the rear of the unit, and it is often separate from the LAN ports.

2 Connect an Ethernet cable from the WAN port of the hub to either the Ethernet port of the internet modem or, if expanding a network, to an empty LAN port on the existing network’s router, switch or hub.

3 Plug an Ethernet cable into one of the LAN ports on the Ethernet hub and connect the other end of cable to the computer or device that will be added to the network. Repeat for any other devices that will need to be on the network.

4 Power up the Ethernet hub and the computers or other devices attached to it. On the front of the hub will be a series of LEDs that correspond to each LAN and WAN port on the hub. Every port that has a cable plugged into it should have one or more of the LEDs lit that represent that port. If not, check the connections and swap out the Ethernet cable if necessary. Software Setup

1 Configure the network settings on each connected computer. If you are expanding a network and the network uses DCHP, or dynamic IP addressing, no configuration will be necessary. On networks using static IP addressing or on a new network setup using the Ethernet hub, each computer or device must be assigned a unique IP address. Local IP addresses must use the allowed “private” address pools that will not interfere with internet addresses. Acceptable addresses include 192.168.x.x, 172.16.x.x to 172.31.x.x, or 10.x.x.x. The “x” represents a number that is chosen by the user, from 0 to 254. All computers on the network should share the first three numbers in the address, with the final number representing the individual computer. In a network with three computers, for example, the first could be 192.168.1.1, the second could be 192.168.1.2 and the third could be 192.168.1.3, though the final number does not need to be sequential.

3 Right-click the icon for the Ethernet adapter and select “Properties.” Click on the check box marked “Internet Protocol (TCP/IP)” and press the “Properties” button.

4 Select the radio button labeled “Use the following IP address.” Enter a unique IP address for the computer and the applicable subnet mask. If a router is used on the network, enter the router’s IP address as the default gateway. Press the “OK” button and reboot if necessary.

5 Enable file and printer sharing from the “Properties” dialog for the Ethernet card if files will be transferred between the networked computers.

6 Click the “Start” button, select “Control Panel” and double-click on the “System” icon. Select the “Computer Name” tab and click on the button labeled “Change” to set the computer’s network name. In the “Computer Name” box, enter a unique name for the computer. In the “Member of” section, choose the radio button marked “Workgroup” and enter the workgroup of the network. If setting up a new network, this name can be change but all computers on the network must share the same workgroup name.

7 Verify that all computers can access the network and the Internet if connected.

Read more: How to Set up an Ethernet Hub | eHow.com http://www.ehow.com/how_4530475_set-up-ethernet-hub.html#ixzz0xnIzsGqa

3 ethernet cables 1 ADSL modem and 1 hub is needed to network computers together.
1. connect telephone cable to modem and switch it on.
2. one end of an ethernet cable is connected to the modem . consider this master ethernet cable. connect the other end of this to the master hub port.
3.now connect pc and any hub port with another ethernet cable(ec) say ec1
4. likewise ec2 to another pc .
try this out to get net in both pc's

When the computers are powered up and connected to the D-Link hub, the computers that are connected to the hub will light up the various LEDs on the hub to indicate which port on the hub is active. Also that computer's network card Link LED light should be on to indicate it is connected to the hub.If the hub's LED is off and the corresponding computer's network card Link LED is off then the network cable is faulty, or the network card is faulty (or the network card driver needs installing) or the port on the hub and/or hub is faulty.To determine which item is faulty, swap network cables around, swap computers to different ports on the hub etc

start the troubleshooting process by making sure that everything (routers,switches, hubs, modems, and computers) is firmlyplugged in.

If your computer is on and the other end of the Ethernet cable isconnected to a network device, the link or activity LED should light.If the light remains dark after you plug in the cable, replace thecable. If replacing the cable gives the same result (no green light), then go to the next step.

Once you’ve eliminated cabling as a source of the problem, it’s time tolook to your computer. Start by making sure that your computer is able toaccess your Ethernet card. A good tool for doing this, and subsequentnetwork troubleshooting, is the command prompt.

Select Start, All Programs, Accessories, and then Command Prompt. When the Command Prompt window opens, type ipconfig –alland press ENTER. Various lines of information will display, dependingon how your system is configured. Look for a section labeled EthernetAdapter Local Area Connection. This section should include a linelabeled Description, which should be a description of your Ethernetcard. If you see it, then your computer knows about your Ethernet cardand has successfully loaded the necessary drivers. If the Descriptionline is blank or missing, you will need to reinstall the drivers foryour Ethernet card.

Your Ethernet card doesn’t detect a connection to the Ethernet cable. Open a command prompt, type ipconfig –all,and press ENTER. If the section that starts with Ethernet adapter LocalArea Connection contains a line labeled Media, with a status of MediaDisconnected, then your computer is unable to detect that a link hasbeen made from your Ethernet card through the Ethernet cable to anothernetwork device, such as your computer or router. Recheck the cabling.Use a known good cable to connect your computer to a known good networkdevice and then perform the check again. If the status is still MediaDisconnected, and you are sure that the cable and the network devicethe cable connects to are good, then you may have a bad Ethernet card.Reinstall the Ethernet card. If the problem continues, you may need toreplace the card.

Other things to check:

Bad connection, bad cable, or wrong cable. The ports on arouter, hub, switch, wireless access point, and print server can, likeany other device, go bad. However, the most common problem is not a badport but a bad or loose connection, a bad Ethernet cable, or the wrongtype of cable. Refer to the Cabling section above, to eliminate thesepossibilities.

Wrong port. One possible cause of Ethernet port problems isusing the wrong port on a network device. For example, routers have WAN(wide-area network) and LAN ports. These ports accept the same Ethernetcabling but are not interchangeable. The same is true of hubs andswitches that have uplink ports, which are specially wired LAN portsthat allow easy cascading of multiple hubs and switches. In some cases,the uplink port is also a normal LAN port controlled by a switch on thedevice. If you’re using the uplink port as a normal LAN port, make surethe device is configured properly for this type of use.

If aport doesn’t appear to be working, you can use the link light toconfirm it. Port link lights should always be lit when a good cable isconnected between the port and another working network device. If youuse known good cable and a known good network device to test the portbut the link light isn’t lit, you may have a bad port. You can eitherreplace the network device, or in the case of a hub/switch, add a hubor switch to gain more LAN ports.

You cannot connect to other computers or router/Internet. Whenother computers in your LAN can connect to each other, as well as tothe Internet or other services, and your computer cannot, this may bean indication that your computer did not receive an IP (InternetProtocol)assignment when you booted.

Open a command prompt, type ipconfig –all, and press ENTER. Inthe section labeled Ethernet adapter Local Area Connection, look forthe line labeled IP. If it starts with 169, you have a self-assignedIP, which indicates that your computer was not able to acquire an IPassignment from the DHCP (Dynamic Host Configuration Protocol) server.

Test your access to the DHCP server by using the ping command. Open a command prompt and type pingfollowed by the IP address of the DHCP server. Your DHCP server isprobably the same as your router. For example, if your router’s IP is192.168.1.1, then type ping 192.168.1.1 and press ENTER. Youshould see four lines of text, starting with Reply From 192.168.1.1:Bytes 32, followed by time values that indicate how much time elapsedbetween the ping command and the router’s response. If you see fourlines that say Request Timed Out, then your computer cannot reach yourrouter/DHCP server.

Make sure the router is plugged in,turned on, and properly configured to provide DHCP services.

These are just a few things to try to help figure out if it is your cable, ethernet card, router, or some other problem.